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Fourier trouble in PDE

  1. Aug 7, 2008 #1
    So I suppose my fourier knowledge is a little bit rusty. Any help would be greatly appreciated.


    How do they get from the original DKS equation to the fourier space DKS equation (from eq 1 to eq 2)?

    Thanks greatly for any help.
  2. jcsd
  3. Aug 11, 2008 #2
    Just out of interest which DKS equation does this refer to ?
  4. Aug 15, 2008 #3
    This is the damped kuramoto-sivashinsky equation.
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